Mechanical and physical properties of thermally modified Scots pine wood in high pressure reactor under saturated steam at 120, 150 and 180 °C.

Rautkari, Lauri; Hill, Callum A S; Ridley-Ellis, Daniel; Hughes, M

Abstract

Scots pine sapwood and heartwood were thermally modified under saturated steam at 120, 150 and 180 °C in a high pressure reactor. Mechanical properties such as dynamic and static modulus of elasticity (MOE), static modulus of rupture (MOR), Brinell hardness and impact toughness were evaluated. The static MOE for sapwood did not decrease substantially (approximately 1 %), not even with a high mass loss of more than 12 %, when the wood was modified at 180 °C. Static MOE of the wood increased approximately 14 %, when modified at 150 °C. Surprisingly, MOR increased by 15 %, when modified at 150 °C with mass loss of 2.3 %. Whereas impact strength and hardness decreased somewhat, when modified at 180 °C. Moreover, high anti-swelling efficiency values were obtained (60 % for sapwood and 52 % for heartwood) when modified at 180 °C.

Citation

Rautkari, L., Hill, C. A. S., Ridley-Ellis, D., & Hughes, M. (2014). Mechanical and physical properties of thermally modified Scots pine wood in high pressure reactor under saturated steam at 120, 150 and 180 °C. European Journal of Wood and Wood Products, 72, 33-41. https://doi.org/10.1007/s00107-013-0749-5

• Journal Article Type: Article
• Publication Date: 2014-01
• Deposit Date: May 27, 2015
• Print ISSN: 0018-3768
• Electronic ISSN: 1436-736X
• Publisher: BMC
• Peer Reviewed: Peer Reviewed
• Volume: 72
• Pages: 33-41
• DOI: https://doi.org/10.1007/s00107-013-0749-5
• Keywords: Scots pine; mechanical properties; impact strength; hardness
• Public URL: http://researchrepository.napier.ac.uk/id/eprint/8222
• Publisher URL: http://link.springer.com/article/10.1007%2Fs00107-013-0749-5